function getSent(){

    $this->db->where('submit_time', $this->uri->segment(3));
    $tempsent = $this->db->get('0_request_details');  //this is the problem here. If it doesnt find the row from the database above it doesnt know what to do here

    if($tempsent){

        $data['sent'] = $tempsent->row();

    }

    return $data;
}